Verdugo

While you can't escape encountering Verdugo, you can shy away from actually fighting it if you want. All you have to do is run around the area and dodge its attacks until the elevator comes.

The only time you can do damage to Verdugo is when it's frozen in nitrogen (there are several nitrogen tanks in the area). You just have to use one of the tanks when the monster is in the area and it will temporarily keep Verdugo from moving like normal, and it's the only time that you can hurt it. Even still, it's probably best to just use a rocket launcher because it can take quite a bit of damage. Almost every attack can be dodged, whether when it comes from behind, below, or above you.